I am delighted with Effaclar duo plus which (used with cetaphil to cleanse) has pretty much cleared my sensitive acne-prone skin. I popped in Boots yesterday and picked up two tubes of Effaclar K very reduced in the clearance section. Has anybody used it? Do I alternate it with the Duo plus? Do I use it in the morning or evening? I have read the leaflet but would value any experiences. Many thanks.